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No. 6|7,290. Patented Ian. 3, I899. G. F. HUTCHINS.

PATTERN ARRESTING MECHANISM FOR LOOMS.

(Application filed Nov. 21, 1896.) 1 (No Model.) 4 Sheets-Sheet l.

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No. 6I7,290. Patented Jan. 3, I899.

G. F. HUTCHINS.

PATTERN ARBESTING MECHANISM FOR LOOMS.

(Application filed Nov. 21, 1896.)

Patented .laln. 3, 1899.

G. F. HUTCHINS. PATTERN ARRESTING MECHANISM FOR LODMS.

(Application fi1ed Nov. 21, 1896.)

4 Sheets-Sheet 3.

(No Model.)

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Patented Jan. 3, I899.

G. F. HUTCHINS. PATTERN ARRESTING MECHANISM FOR LOOMS.

(Application filed Nov. 21, 1596.

4 Sheets-Sheet 4.

(No Model.)

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GEORGE F. IIUTCHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE CROMPTON dz KNOWLES LOOM WORKS,

OF SAME PLACE.

PAT'ILERN-ARRESTING MECHANISM FOR Looms;

srncIFIoArIoN forming part a Letters ratent no. 617,290, dated Janua y 3, 1899. Application filed November 21, 1896. Serial No. 612,940. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE F. HUTCHINS, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Pattern- Arresting Mechanism for Looms, of which the following is a specification.

My invention relates to looms for weaving textile fabrics, and more particularly to that class of looms provided with what is termed a dobby mechanism, the pattern-surface of which controls the movement of the harnesses, and also with a drop-box-pattern mechanism, the pattern-surface of which controls the movement of the boxes. There are two or more shifting shuttle-boxes at one end of the lay and a single stationary shuttle-box at the other end of the lay.

Heretofore in this class of looms the pattern-surfacesof the dobby and drop box pattern mechanisms have been so construct ed and arranged that in case of a mispick or in case the weaver has to pick out for any reason it has been necessary to turn back and set the pattern-chain of the dobby mechanism and the pattern-chain of the drop-box mechanism separately, and in doing this great care has to be taken that the two patternchains coincide exactly with each other, so that the loom will weave the fabric properly.

One of the objects of my present invention is to so construct the dobby-mechanism pattern-surface and the box-mechanism patternsurface and combine them together that the operator byturning a single hand-wheel may turn both pattern-surfaces forward or backward simultaneously, and thus prevent any possibility of their getting out of time or harmony, and heretofore in this class of looms above referred to when the filling broke or ran out and the loom was stopped automatically by the filling stop-motion the momentum of the loom caused the harnesses to be shifted and the shuttle being thrown across the lay to be returned to its box without putting in any filling-that is, the loom made two picks without putting in any filling-and after the operator has withdrawn the shuttle and put in new filling in case of its having run out or drawn out a new end in case of its breaking he must before he starts the loom turn back the pattern-surface of the dobby mechanism and also the pattern-surface of the drop-box mechanism two picks. After he has done this he starts the loom and the shuttle commences to put in the filling in the fabric at the point where the filling was broken or ran out.

Another object of my present invention is in case of the breaking or running out of the filling to do away with the necessity of the operator turning back the pattern mechanisms, as above described, two picks to make the right shed for the shuttle when he starts the loom and to so construct the dobby pattern mechanism and the drop-box pattern mechanism that when the filling stop-motion operates to stop the loom the driving mechanism of the dobby pattern-surface and the drop-box pattern-surface will be thrown out of action, so that said dobby pattern-surface and drop-box pattern-surface will be automatically stopped and will not again operate to indicate a change in the harnesses or the boxes until the shuttle in which the filling has been renewed has been thrown across and back-that is, the loom has made two picks-and the shuttle is ready to weave the fabric at the point where the filling broke or ran out. Then the dobby pattern-surface and the drop-box pattern-surface will automatically start to indicate and the loom continue to operate in the same manner as before the filling broke or ran out. A,

By my construction above referred to it is not necessary to turn back the pattern-surfaces in case of the filling breaking or running out, thus saving much time and annoyance for the operator.

My improvements first mentioned are adapted to be combined with and used on looms which have a single or double index dobby mechanism and a drop-box pattern mechan 1s1n.

My improvements last mentioned are adapt ed to be combined with and used on looms which have a double-index dobby mechanism alone or both a double-index dobby mechanism and a drop-box pattern mechanism.

It will be understood that in a double-in dex dobby pattern mechanism there are two rows of pins or pattern-surfaces on each pattern-bar. One row acts on one set of indicator-levers of the dobby and the other row acts on the other setthat is, the two rows of pins on one bar will actuate the indicatorlevers to move the harnesses for two picks of the shuttle, so that the dobby pattern-cylinder is only moved every two picks of the loom, the same as the box pattern-cylinder.

I have shown in the drawings a portion of a drop-box pattern mechanism, which in this instance is provided with an auxiliary or multiplier chain and is of ordinary and-Wellknown construction and operation and fully shown and described in my United States Patent No. 413,369, of October 22, 1889. I have also shown in the drawings, combined with said box pattern mechanism, a portion of a double index dobby pattern mechanism, which may be of any ordinary and well-known construction and operation and of the description set out in United States Letters Patent No. 388,318, of August 21, 1888.

Combined with and applied to the pattern mechanisms above referred to I have shown my improvements.

Referring to the drawings, Figure 1 shows a plan view of a drop-box pattern mechanism of the description set out in said Patent No. 413,369 and a double-index dobby pattern mechanism (of which only a portion of the pattern-cylinder and its driving mechanism is shown) with my improvements applied to said pattern mechanisms. Fig. 1 is a section on line 1 1, Fig. 1, looking in the direction of arrow 0, same figure. Fig. 2 is, on a reduced scale, an end view of the parts shown in Fig. 1, looking in the direction of arrow (1, same figure, and shows also the loom side and connections to the arm on the knock-off shaft. Fig. 3 is an edge View of the frame shown in Fig. 2, looking in the direction of arrow 19, Fig. 2, showing by full lines the connections shown by dotted lines in Fig. 2. The pattern mechanisms are not shown. Fig. 4 is a sectional detail through the gear and slideclutch shown at the top of Fig. 1. Fig. 5 shows the worm 31 and its shaft 14 detached, and Fig. 6 shows the periphery or surface of the cam shown in Fig. 5 extended in a horizontal plane.

In the accompanying drawings, 1 is the loom side or frame at the left of the loom.

2 is the dobby-frame, supported on the upper end of the frame 1 and having the two upright side frames 3, in which is mounted the shaft 4 of the dobby pattern-cylinder 5 for the harness-frames. (Not shown.) The pattern-cylinder 5 may be of ordinary construction and is provided with a series of longitudinal grooves or recesses 6, in which extend the bars of the pattern-chain in the ordinary way. Only one pattern-chain bar tends beyond the inner side frame 3 and has a worm-gear 10 loose thereon, which is held to turn with the shaft 4 by a spring-actuated clutch device 11 of ordinary and well-known construction and consisting of a springactuated arm or dog 11, pivoted at one end on a plate 11", the hub 11 of which is fast on the shaft 4.

A coil-spring 12, bearing at one end against a collar 12, fast on the end of the shaft 4 and at its other end against the arm or dog 11, acts to keep the said dog 11' in engagement with the lugs 10 on the worm-gear 10, so that the revolution of the gear 10 will revolve the shaft 4 of the pattern-cylinder 5. The shaft 4 can be turned by hand, if desired, the dog 11 slipping by the lugs 10 on the worm-gear 10 and the spring 12 contracting, so that the shaft 4 and pattern-cylinder 5 may be turned in either direction independently of said worm-gear 10, all in the usual and well-known way. Secured to the dobby-mechanism frame 2 is the frame 13, which in this instance supports the drop-box pattern mechanism and also the shaft 14, which drives the dobby pattern-chain cylinder 5 and the pattern-surfaces of the drop-box pattern mechanism. The shaft 14 has a gear 15 loose thereon, driven by a system of gears or some driven part of the loom. (Not shown.) Said gear 15 is attached to said shaft to revolve the same by means of a sliding grooved hub 16, loose on the shaft 14 and carrying a pin 17, which extends through a guide-hole in a collar 18, fast on the shaft 14, (see Fig. 4,) and is adapted to enter a hole 15 in the gear 15 to cause the shaft 14 to be revolved with the gear 15 and to be withdrawn from said hole to allow the gear 15 to run loose on the shaft 14. (See Fig. 4.)

A lever 19, pivoted at 20, is provided with a yoke 19, having pins or rolls which extend into the peripheral groove in the hub 16. The lever 19 is used to move said hub in one direction or the other to secure the gear 15 to the shaft 14 or to cause it to run loose thereon, as above described. A spring 21 encircles the pivot-stud 20 of the lever 19 and acts to move the lever 19 in one direction to keep the hub 16 against the collar 18, as shown in Fig. 1, and the pin 17in the hole 15' in the gear 15.

The lever 19 is operated automatically to move the hub 16 and withdraw the pin 1'7 from the hole 15 in the gear 15 and allow said gear 15 to run loose on the shaft 14 and said shaft to stop by a cord or flexible connection 22, which is secured at one end to the lever 19, in front of its pivot-point 20, and runs over a pulley 23, supported on an arm 24, .over a sec ond pulley 25 and a third pulley 26, supported on the loom side, to an arm 27, fast on the knock-off shaft 28, mounted to rock in bearings 29 on the front of the breast-beam 30. (See Figs. 2 and 3.)

On the opposite end of the shaft 14 from the gear 15 is fast aworm 31, which extends below and engages and turns the worm-gear 10. The worm 31 has a dwell of one-half a revolution, as there are two sets of pins 8 and 9 on the pattern-bars, and therefore a partial revolution of the worm-gear 10 and patterncylinder 5 is made only every two picks in the ordinary and well-known way.

On the extreme end of the shaft 14 is fast a gear 32, which meshes into and drives a gear 33, fast on the shaft 34 of the drop-box pattern mechanism, which, as above stated, is fully shown and described in Patent No. 413,369, to which reference is made, and does not require to be described herein. By means of the gears 32 and 33 the dobby pattern-cylinder and the drop-box pattern-cylinders are connected so that the turning of one in either direction will turn the other simultaneously.

In the drop-box pattern mechanism, 35 is the box pattern-chain cylinder, and 36 the pattern indicator-levers for a series of six drop-boxes. (Not shown.)

37 is the indicator-lever, connected through connector 45, angle-lever 46, pivoted at 47, sliding rod 48, provided with a collar 48, engaged by said lever 46, and yoke-arm 49, fast on rod 48, with the pin-wheel 42, splined on a sleeve 49, fast on the shaft 34, to slide said pin-wheel 42 into engagement with the starwheel 43, which operates the auxiliary or multiplier pattern-chain cylinder 40 when a roll 37 on the pattern-chain comes under the indicator-lever 37. (See Fig. 1.)

A spring 50, secured to an extension 46 on the angle-lever 46 and to a stationary part 51, acts to move said lever 46, sliding rod 48, and yoke-arm 49 to cause the pin-wheel 42 to move out of engagement with the star-wheel 43 when a tube (not shown) on the pattern-chain comes under the indicator-lever 37.

The auxiliary or multiplier pattern-chain cylinder 40 used in this instance and the indicator-lever 41 thereof are connected through connector 52, angle-lever 53, pivoted at 54, sliding rod 55, provided with a collar engaged by angle-lever 53, and yoke-arm 56, fast on rod 55, with the pin-wheel 38, splined on the sleeve 49, to move said pin-wheel 38 into engagement with the star-wheel 39, which 0perates the box pattern-chain cylinder 35 according to the indications of the multiplier pattern-chain, in the ordinary way, when a roll 41 comes under the indicator-lever 41. (See Fig. 1.)

A spring 57, secured to an extension 53 on the angle-lever 53 and to a collar 58, acts to move said lever 53, sliding rod 55, and yokearm 56 to cause the pin-wheel 38 to move out of engagement with the star-wheel 39 in the tion of the intermediate connectors and levers are somewhat changed, as shown in the drawings, from what is shown in said patent.

On the front end of the shaft 34 is fast a hand-wheel 44, by means of whichboth the box pattern-chain mechanism and the dolbby pattern-chain mechanism through gears 33 and 32 are simultaneonslytnrned backward or forward, the hand -lever 19 being first moved to the position indicated by dotted lines, Fig. 1, to disengage the pin 17 on the hub 16 from the hole 15' in the gear 15 and allow the gear to be loose on the shaft 14.

It will be seen by referring to Fig. 4 that in case of the withdrawal of the pin 17 from the hole 15 in the gear 15 there must be a complete revolution of the gear 15 before the pin 17 will again enter into the hole 15 therein.

Now when the loom is stopped by the filling stop-motion in the usual way in case the filling runs out or breaks the rotation of the knock-off shaft 28, through arm 27 and connector 22, will automatically move the lever 19 and the hub 16 and withdraw the pin 17 from the hole 15 in the gear 15 and disengage the gear from and allow it to run loose on the shaft 14. The momentum of the loom will carry the opening 15 in the gear 15 by the end of the clutch-pin 17, so that said pin cannot reenter the hole 15. The shaft 14 being unclutched or disconnected from the gear 15 will stop, and consequently the pattern-cylinder of the dobby mechanism and the pattern-cylinders of the drop-box mechanism will stop. The shuttle in which the filling has broken or run out will be thrown once across the lay, and the momentum of the loom will cause it to be thrown back again to the side of the loom from which it started, and the momentum of the loom will cause the harnesses to make two sheds-that is,the loom will make two picks-but no filling will be put in after the pattern-cylinder of the dobby mechanism and the pattern-cylinder of the dropbox mechanism have stopped, as above described. The take-up mechanism will be arrested--that is, the mechanism which operates the take-up roll will be stopped-when the loom stops, in the ordinary way. After the broken end of the filling is drawn out and caught or the new filling put into the shuttle and the shuttle placed in the loom and the loom started in the ordinary way one pick of the shuttle must be made to put in a filling before the pattern mechanisms begin to indicate, for the reason that in the last two picks no filling was put in, and the pattern mechanisms begin to indicate on the second pick of the shuttle. Now if the pattern mechanisms change the pick and shed when the loom is started the right pick and shed will not be made, and therefore, as before stated, in ordinary practice the pattern mechanisms must be turned back before the loom is started. In my improvements by unclutching the gear 15 from the shaft lei as above described said gear must make a complete revolution after the loom is started, which is equivalent to two picks of the shuttle,- before it will be again clutched to the shaft 14: by the operation of the spring 21 and operate the pattern mechanisms-that is, when the loom is started the shuttle will be thrown across the lay to put in the filling where no filling was put in before.

By reason of the two rows of pattern-pins 8 and 9 on the pattern-bar 7 of the double-indeX dobby the second row of pins will indicate and change the shed after the first pick of the shuttle, so that the second pick of the shuttle will be put into the othershed to put in the filling where no filling was put in before without any movement of the patternchain cylindersthat is, two picks of the shuttle will be made to put in two fillings before the pattern-cylinders begin to rotate to bring into action new pattern-bars.

It will be understood that the details of construction and the manner of combining my improvements with the drop boX pattern mechanism and the dobby pattern mechanism may be varied, if desired, from what is shown and described. I have shown the drop-box pattern mechanism with an auxiliary or multiplier pattern-chain; but this maybe left off and the ordinarydrop-box pattern-chain used. I have also shown a drop-box pattern mechanism combined with the dobby mechanism; but in some weaving the drop-box pattern mechanism may be dispensed with and only the dobby pattern mechanism used, and the second feature of my inventionthe automatic starting of the dobby pattern-cylinderafter two picks have been madecan equally well be used in this case.

Having thus described my invention,what

I claim as new, and desire to secure by Letters Patent, is

1. In a loom provided with a double-index dobby pattern mechanism, the combination with the dobby pattern-cylinder, a shaft, and intermediate connections therefrom, which drives said cylinder, and driving mechanism for said shaft, of means for automatically disconnecting said driving mechanism on the operation of the filling stop-motion on the loom,- and means for automatically connecting said driving mechanism, to cause said shaft and cylinder to start after two picks of the shuttle are made, and said filling stop-motion,substantially as set forth.

2. In a loom provided with a drop-box pattern mechanism, and a double-index dobby pattern mechanism, the combination with the box pattern-cylinder, and the dobby patterncylinder, a shaft, and intermediate connections therefrom, which drive said cylinders, and driving mechanism for said shaft, of means for automatically disconnecting said driving mechanism on the operation of the filling stop-m otion on the loom, to cause said cylinders to stop, and means for automatically connecting said driving mechanism to cause said cylinders to start after two picks of the shuttle are made, and said filling stopmotion, substantially as set forth.

3. In a loom provided with a drop-box pattern mechanism, and a double-index dobby pattern mechanism, the combination with the shaft which communicates motion through interm ediate mechanism to the box pattern-cylinderand to the dobby pattern-cyli nder,a gear loose on said shaft but clutched thereto, and the filling-stop-motion shaft, of means for automatically unclutching said gear through connections to the filling-stop-motion shaft on the operation of the filling stop-motion, to cause the pattern-cylinders to stop, and means for automatically clutching said gear on the shaft to cause the pattern-cylinders to start after two picks of the shuttle and said filling stop-motion, substantially as set forth.

GEORGE F. HUTOHINS.

Witnesses:

J. O. DEWEY, M. J. GALVIN. 

